Floor, sidewalk, and like construction.



xvii a E E w n 0 .MIIJ! i .i. u v w .m D E n W P P. H. JACKSON.

FLOOR, SIDEWALK, AND LIKE CONSTRUCTION. .APPLIOATION FILED 001.12, 1905.

ed in the sidewalk or similar surface.

UNITED STATES PATENT oFnroE.

PETER H. JACKSON, OF SAN FRANCISCO, CALIFORNIA.

FLOOR, SIDEWALK, AND LIKE OONSTRUCTIQN.

Specification of Letters Patent.-

Patented Oct. 1c,- 1906.

Application filed October 12, 1905. Serial No. 282.471.

To all whom it may concern:

Be it known that I, PETER H. JAoKsoN, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Floor, Sidewalk, and Like Constructions, of which the following is a specification.

My invention-relates to improvements in the construction of artificial-stone, cement, or concrete floors, roofs, sidewalks, or the like,.in which corrugated sheet-metal bottoms form a ceiling to an apartment beneath, part of which maybe illuminated and alternate with portions which are not illuminated.

It consists in the construction of sheetmetal concrete-supporting bottoms having varying depths in the illuminating and unilluminating portions.

It also consists in details of construction which will be more fully explained by reference to the accompanying drawings, in which i Figure 1 is a plan view showing a sidewalk with my construction. Fig. 2 is a section through X X of Fig. 1. Fig. 3 is a section through Z Z of Fig. 1. Fig. 4 shows the sidewalk continued to the curb.

In Patent No. 7 25,846, issued to me April 21, 1903, I have shown a means for constructing corrugated-metal bottoms to be used in conjunction with illuminated and unilluminated spaces inwhich provisionis made for a greater depth of concrete or plastic filling over the unilluminated portions by the use of bottoms with similar de ths of corrugations but laid at different level s In my present invention I obtain the desired result by the em loyment of bottoms having an unequal deptih of corrugations.

In the lighting of basements or rooms beneath floors or roofs where there are piers, columns, or walls having openings at intervals throughwhich the light may ass from the front to the inner room to be lig ted such lighting is effected by the useof glass insert- As the glass is an expensive portion of the structure, it is desirable to use the glass only opposite the light-openings above referred to and it is referable to make a solid concrete or equivaent flooring in the intermediate portions or opposite the piers or solid portions of the wall.

glass is sufficiently separated by the depth of the glass to prevent its cracking by expansion and contraction; but'the deeper solid portion of the concrete must in some way be provided with means to prevent this cracking, such means usually consisting of transverse cuts or incisions made, in the surface and dividing it into squares, so that the individual squares may contract and expand with relation to the incisions and the surface of the squares will not be cracked.

In order to make a symmetrical support for the glazed and unglazed portions of the surface, I employ a metal corrugated to form alternate elevations" and depressions. The portion A, which coincides with the 0 enings between the piers or through the wa ls, is provided with glass of any prismatic or other suitable form, through which the light may pass and by which it is diverted through the wall-openings and into the basement extension at the rear. These corrugations are made of suitable depths, as shown plainly at 2 and 5, and the glass being set into the supporting-surface the intermediate spaces are filled with a suitable concrete or Portland cement or other filling up to the level of the top surface of the glass. The small amount of concrete at any particular point between the glasses and the depth of the glasses are such that there is no danger of the cement cracking by expansion or contraction.

The piers or walls 4, which are interposed at intervals along the building-front, will prevent any light passing into the basement where said piers are located, and in order to save expense the portion of the sidewalk or.

floor corresponding with these piers may be made of solid cement. In order to give the necessary strength to this portion, the corrugations 5 are of considerably less depth than the corrugations where the glass is introduced. By this construction the bottom or all of the bottoms of the corrugations are on a common level and may thus be supported by suitable beams or supports, while the upper surface above the corrugations 5 may be filled with a thicker body of cement, and thus brought up to a level with that portion of the surface which is occupied by the glass. By thus making the corrugated sheet metal of different depths I am enabled to support all portions on the same plane, and the end bearings are also on the same level, thus saving the expense of interposed metal bearers The concrete filling which surrounds thei that would otherwise be necessary to adjust IIO I fitted has the deeper corrugations, and the outer sides of these corrugated-metal sheets are supportedupon the header-beam 6 and upon the same plane with the part previously described. Between the basementpiers extend the angle-iron supports 10. These are of comparatively shallow depth and will not prevent the passage of light from the glass into the rear portion of the basement. By these improvements I dispense with the connecting-irons, present bottoms of' different thicknesses 'on'the same level by using various depths'of retainingchannel corrugations and equally supported on the same plane and forming a continuous ceiling for both portions, while the top surface and both of the light and blind portions are on the same level.

Having thus described my invention,what I claim, and desire to secure by Letters Patent, isp 1. An improvement in sidewalk, floor and like structures, said improvement consisting of sections formed of corrugated-metal bottoms of different depths of corrugations having lower surfaces upon the same plane, and a filling of concrete or cement of correspondingly different depths, and having a level upper surface.

2. A sidewalk, floor, or like structure composed of corrugated-metal bottomswith different depths of corrugations, the meeting bottom edges of said sections being on the same level, a filling of concrete or cement covering and uniting the corrugations and forming a level wearingsurface at the top.

3. A sidewalk, floor, or like structure composed of corrugated-metal bottoms perforated for illuminating lights or lenses, an unperforated corrugated-metal bottom with lesser depth of corrugations than the firstnamed bottom, said bottoms having their meeting lower edges on the same plane, and the outer edges resting on the same level support, a cement or concrete filling imposed on the different depths of corrugations, and having a common level wearing-surface.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

PETER H. JACKSON.

Witnesses:

. H. F. STIEPER, S. H. NOURSE. 

